Ok I'm at wits end with this. I warn you, before you read on, make sure you've either beat Crysis or are stuck on the Tac Gun part like myself. Otherwise you're in for a spoiler.

Ok. First time I went to play the last part "Reckoning" where you have to fight the HUGE alien ship I screwed up royal. I never got the Tac Gun from the Armory and therefore couldn't beat the ship. I shot every last bit of ammo at that thing and still couldn't do it. Talk about time consuming and annoying. All the while the dumb broad in the Vtol yelling at me to use a weapon I had no way of attaining. Sigh...

Part 2. I load a saved game and grab the Tac Gun from the armory BEFORE going on the deck. All is well right? WRONG!! I get to the point where I have to use this afore mentioned Tac Gun and disaster strikes. The piece of crap won't lock on to a darn thing. No matter what I aim at, no matter how I aim, not matter what I do, it always says "No Target Locked". It won't even initiate a lock on sequence. Nothing... I even loaded from a previous saved game, tried leaving the game and coming back, hell even restarting Windows and coming back in. Nothing will work.

Now I've read elsewhere that others are having the same issue and have had to replay the ENTIRE Reckoning mission. I refuse to do so. I'm playing on the hardest difficulty and refuse to go through that whole crap again. It was nerve wracking enough the first time through. I can't understand how EA missed this GLARING bug. It's inexcusable really. Now I'm stuck and have officially gave up on beating Crysis all because of this stupid bug that I have no control over and can't get around.

If you've had this same experience and found a way to fix it, please share so I can at least finish the game. Otherwise I'm done with it.

the stupid tac gun will only work/lock on after the girl specifically tells you to use it. it doesnt do squat until then. (well, that's how it was when i played it) and i came close to throwing the damn gun away in favor of the missle launcher. lol! oh, and i think you need to use alt-fire to lock on? sorry, already forgot about it.

I didn't have problems locking on with the TAC gun, but in that same area of the level I kept falling through the deck when I was running around. At one point the VTOL even got stuck behind the HUGE alien spaceship thingy. The chick kept telling me to jump, but I guess she didn't realize there was about 300 feet between the carrier, the alien, and herself! Ha!Ha! I'm guessing the game gets really confused on that part because, imho, that is the most intensive part of the game... too much stuff going on at once (for my rig at least).

I had to go back two or three savegames just to get it back to normal. You will more then likely have to start the level all over again. I know that sucks, but it's still fun albeit time consuming...

Yeah, there is a certain point in the game when the final Boss Alien Ship's shields are down, that is the only point where the tac can lock on. Until then, it will not lock on whatever you do.

You don't know how many times I died trying to get the tac lock onto the smaller alien boss on the deck, before finally realising that it isn't going to do squat. lol.

I did not like Crysis after the ice mountain level. Once you emerged from the alien ice mountain/spaceship, it was just a ridiculously linear shooter with some really poor design elements. Oh, and the bugs....

I hated the VTOL too..after the first few attempts trying to battle the aliens in the sky and getting my ass kicked, I just flew straight on to the carrier, avoiding the tornadoes on my way. Screw the survivors on the ground..lol.

yeah you have to listen to the girl. once you've both destroyed the enemies shields the ship hovers over you to drown the ship. Thats when you fire the nuke into its heart. You have to get there first. The tac gun wont lock until that point.

See that's the thing... I'm already at that point. The broad is telling me to "Use the Tac Gun!" and "Lock on with the Tac Gun!". Well I'm saying... I CAN'T AND I HATE LIFE!!

The Tac Gun simply won't do anything. Even after I take out the 4 turrets and the Vtol is right next to the Alien ship (flying over the water) and has it's lights shined right on the cannon that I'm supposed to shoot at with that very Tac Gun. It just sits there and won't any kind of lock on sequence at all...

I remember thinking that I wasn't able to lock on with the tac cannon either but then I realized I was doing something wrong, I think I was aiming at the wrong part or something, or maybe not in the right view with the cannon. Just mess around with it and maybe someone else can remember exactly what you are supposed to aim at.